snow grain
Comparison of different methods to retrieve optical-equivalent snow grain size in central Antarctica
... optical-equivalent snow grain size affects the reflectivity of snow surfaces and, thus, the local surface en- ergy budget in particular in polar ...optical snow grain size is derived, ...
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Effects of snow grain shape on climate simulations: sensitivity tests with the Norwegian Earth System Model
... Abstract. Snow consists of non-spherical grains of various shapes and ...calculations, snow grains are often treated as ...of snow albedo in the Snow, Ice, and Aerosol Radiation (SNICAR) model ...
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Retrieval of snow grain size and albedo of western Himalayan snow cover using satellite data
... of grain size from the snow reflectance at ...mapped grain size using TM band-4 ...two-stream snow reflectance model over Terre Ad´elie, ...estimated grain-sizes using TM band-4 much ...
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Retrieval of snow albedo and grain size using reflectance measurements in Himalayan basin
... seasonal snow were carried out and analysed to retrieve the snow albedo and effective grain ...retrieved snow grain sizes using different models based on the ART theory were compared ...
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A Modelling Approach to Assess the Impact of Black Carbon Deposition on Snow Surface Albedo
... in snow is not yet available due to the difficulties and uncertainties in measurement ...based snow albedo models, which can be coupled with other climate models such as the Global Circulation Model (GCM), ...
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Measuring the specific surface area of wet snow using 1310 nm reflectance
... The calculations done for Fig. 8 follow the DUFISSS con- figuration detailed in Gallet et al. (2009). Both the Mie and layered codes used calculate the reflectance of a 25 mm thick snow sample. Direct nadir ...
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CREST Snow Field Experiment: analysis of snowpack properties using multi frequency microwave remote sensing data
... More measurements are needed to quantify the thickness of ice layers at the surface and within the snowpack and its impact on microwave emission. The effects of sensible heat flux, relative humidity and other ...
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Simulation of the microwave emission of multi-layered snowpacks using the Dense Media Radiative transfer theory: the DMRT-ML model
... the snow scattering and extinction coeffi- cients and on the Discrete Ordinate Method (DISORT) to nu- merically solve the radiative transfer ...horizontal snow layers and an optional underlying interface ...
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Drifting snow climate of the Greenland ice sheet: a study with a regional climate model
... the snow albedo scheme. To resolve this, we included a snow albedo parameteriza- tion based on the growth of snow during dry and wet meta- morphosis, so that snow albedo can be physically ...
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Implementation of a physically based water percolation routine in the Crocus/SURFEX (V7.3) snowpack model
... in snow, Crocus has histori- cally used an empirically based routine, the so-called bucket routine that has been calibrated using long time series of lysimeter data (Morin et ...the snow layer pore space. A ...
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The effect of snow/sea ice type on the response of albedo and light penetration depth ( -folding depth) to increasing black carbon
... similar, snow- packs at Barrow Alaska: a hard snowpack, soft snowpack, in- land snow and snow on sea ...and grain size independently of each ...on snow grain size, with a larger ...
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Near-surface climate and surface energy budget of Larsen C ice shelf, Antarctic Peninsula
... and snow grain size would improve the simulation of the ...incorporate snow densification and snow metamorphism into the SEB model, but we did not pursue this for the present ...
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Influence of grain shape on light penetration in snow
... in snow. Below the snow surface, spectral irradiance decreases exponentially with depth with a decay constant called the asymptotic flux extinction ...on snow grain shape. While representing ...
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Case study of spatial and temporal variability of snow cover, grain size, albedo and radiative forcing in the Sierra Nevada and Rocky Mountain snowpack derived from imaging spectroscopy
... mdl snow is modeled using the radiative transfer code DISORT (Stamnes et ...optical snow grain size under snowmelt conditions (Painter et ...the snow grain size ...melting snow ...
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Spectral reflectance of solar light from dirty snow: a simple theoretical model and its validation
... the snow albedo as the function of snow grain size, soot concentration, and soot mass absorption coefficient is ...of snow pollution on snow ...in snow is proposed. The equations ...
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Screening for snow/snowmelt in SNPP VIIRS aerosol optical depth algorithm
... 2013). Snow reflectance properties vary significantly with snow grain size (Wiscombe and War- ren, 1980; Warren, 1982) and impurities in or on the snow (Doherty et ...the snow ages, and ...
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Influence of meter-scale wind-formed features on the variability of the microwave brightness temperature around Dome C in Antarctica
... the snow characteristics and the microwave emission undu- lations, we collected detailed snow grain size and density profiles at two points where opposite extrema of brightness temperature were ...to ...
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Combined retrieval of Arctic liquid water cloud and surface snow properties using airborne spectral solar remote sensing
... over snow or sea ice using band 6 at 1640 nm and band 7 at 2130 nm (Platnick et ...effective snow grain size is provided by the Snow Grain Size and Pollution amount (SGSP) retrieval ...
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Seasonal variations of the backscattering coefficient measured by radar altimeters over the Antarctic Ice Sheet
... the snow provides information on both the sur- face and the subsurface of the snowpack due to its depen- dence on the snow ...(surface snow density, snow temperature and snow ...
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On the reflectance spectroscopy of snow
... the snow albedo because K is ...the snow grain size) because the underlying theory is valid for weakly absorbing media ...the snow grain size is proportional to the value of ...derived ...
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